Capital gain distributions (also called capital gain dividends) are paid to you or credited to your account by mutual funds (or other regulated investment companies) and real estate investment trusts (REITs). They will be shown in box 2a of the Form 1099-DIV you receive from the mutual fund or REIT.

Report capital gain distributions as long-term capital gains, regardless of how long you owned your shares in the mutual fund or REIT.

Some mutual funds and REITs keep their long-term capital gains and pay tax on them. You must treat your share of these gains as distributions, even though you did not actually receive them. However, they are not included on Form 1099-DIV. Instead, they are reported to you in box 1a of Form
2439.